This is a fantastic peice of kit. Made out of real metal. No cheesy built in speakers. This was Casio’s 1985 attempt at building a professional synyh. There is one spring missing on the battery compartment which maintains saved patches. Other than that everything appears in order. Pitch bend and modulation wheels sound and feel good. The keys have a nice weight to them. The volume slider is clean and silent though there is a slight crackle on the Stereo Chorus slider. I guess it has had little use over the last 41 years! If you want a synth that sounds like the 80’s but still works now and is built for the studio or the road then you need this keyboard! Search on Casio CZ 5000 on youtube and tutorials and sound demos will appear.